Hardware reference guide

Modicon Quantum Overview
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Quantum Power Supplies
Overview
Quantum power supplies are used to supply system power to all modules inserted
into the backplane, including:
z Quantum CPU modules
z Quantum Interface modules
z Quantum I/O modules
Depending upon the system configuration, the option exists of using the power
supply in three different modes.
Power Supply Modes
The following table shows the power supply modes.
Power Supply Type Usage
Standalone For 3 A, 8 A or 11 A configurations that do not require fault
tolerant or redundant capabilities.
Standalone Summable For configurations consuming more than the rated current of one
supply, two summing power supplies can be installed in the
same backplane.
Redundant For configurations requiring power for uninterrupted system
operation. Two redundant power supplies are required for
redundancy.
CAUTION
System Safety
Exercise caution when considering a combination of power supplies in a
backplane. Use only like power supplies with the exceptions noted in System
Design Considerations for Quantum Power Supplies, page 741.
Failure to follow these instructions can result in injury or equipment damage.